I've had my Fire HD 8.9 since Nov and have never been successful in transferring my Calibre books via USB. I'm running Win7 x64 and the latest version of Calibre (0.9.28). The Fire is recognized as a media device -- never as a drive.

Honestly, I've read the dozens and dozens of posts here on MR as well as those found via Google the past several months. It seems the solutions are targeted at XP users, not Win7. Is anyone with a Fire HD successfully transferring books via USB with Win7?

I don't believe the ADB drivers will have anything to do with being able to see the device as a "drive." Make sure you concentrate on solutions for problems with MTP drivers and connecting MTP devices.

I've had my Fire HD 8.9 since Nov and have never been successful in transferring my Calibre books via USB. I'm running Win7 x64 and the latest version of Calibre (0.9.28). The Fire is recognized as a media device -- never as a drive.

Why haven't you been successful? I would expect your Fire HD 8.9 to be seen as a media device just like my Nexus 7, but I have no trouble transferring my books via MTP.